. >> reporter: to re-create one of the first major disasters ever captured on camera, steve wolf and the team test each theory, one at a time. lightning, a bomb, a spark. the question is, was the hindenburg brought down by mother nature? sabotage, or something else? >> in our lab testing, most of the theories didn't pan out. but one of them does. >> reporter: after three-quarters of a century, the team will make the public wait just a bit longer for the answer. releasing their findings on sunday. for "good morning america," john schriffen, abc news, new york. >> and what the story of the hindenburg airs sunday on discovery channel. >>> now, it's time for the weather and sam. >> you remember that last round of severe weather in the southeast, there were about 16 tornado reports. we're going to show you video that's a little disturbing. but everyone is okay after this video. just to show you, that when a station in birmingham, alabama, did an interview with some folks after the damage was done to their house, they're standing on the porch of the house during the interview when this hap